body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto;
  background: #f5f5f5;
  margin: 0;
  padding: 40px;
}

/* ===== 后台卡片（纵向）===== */
.app-card {
  max-width: 520px;
  margin: 0 auto 24px;
  background: #fff;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(0,0,0,.1);
}

/* 标题 */
.app-card h2 {
  margin-top: 0;
}

/* ===== 表单 ===== */
input, textarea {
  width: 100%;
  padding: 8px;
  margin-bottom: 12px;
  border-radius: 8px;
  border: 1px solid #ccc;
  font-size: 14px;
}

textarea {
  resize: vertical;
}

/* 按钮 */
button {
  padding: 10px 16px;
  border-radius: 20px;
  border: none;
  background: #1a73e8;
  color: white;
  font-weight: 600;
  cursor: pointer;
}

/* ===== 应用列表项 ===== */
.app-item {
  border-top: 1px solid #eee;
  padding-top: 12px;
  margin-top: 12px;
  font-size: 14px;
}

/* ===== 前台页面（如果共用 CSS）===== */
.app-row {
  display: flex;
  gap: 16px;
}

.icon {
  width: 96px;
  height: 96px;
  border-radius: 20px;
  background: #eee;
  object-fit: cover;
}

.info {
  flex: 1;
}

h1 {
  margin: 0 0 16px;
  font-size: 22px;
}

p {
  margin: 8px 0 16px;
  color: #666;
}

.btn {
  display: inline-block;
  background: #1a73e8;
  color: white;
  padding: 10px 18px;
  border-radius: 24px;
  text-decoration: none;
  font-weight: 600;
}